Home / 143,145.28-197,537.43-79,481.98

Finding the Fourth Proportional to 143,145.28, 197,537.43 and 79,481.98

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Solution

The fourth proportional to 143,145.28, 197,537.43 and 79,481.98 is: 109,683.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145.28 : 197,537.43 = 79,481.98 : x
  2. Step 2: Convert to fraction form
    143,145.28/197,537.43 = 79,481.98/x
  3. Step 3: Cross multiply
    143,145.28x = 197,537.43 × 79,481.98
  4. Step 4: Simplify right side
    143,145.28x = 15,700,666,060.51
  5. Step 5: Solve for x
    x = 15,700,666,060.51/143,145.28
  6. Step 6: Final answer
    x = 109,683.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.